29, Saint Marys Street

29 Saint Mary's Street is a house that has been converted into offices. It dates from the early to mid-18th century and was remodeled in the early 19th century. The building is rendered, likely over brick, and features a plain tile roof with a hip on the rear wing. It has two storeys and an attic, with a moulded plinth, a first-floor cill band, and wide end pilaster strips that are cut back to the left. The building has a moulded cornice with a blocking course and parapeted gable ends. There is an off-centre brick ridge stack to the right and an external lateral brick stack to the left of the rear wing.

The façade has three dormers with boxed glazing bar sashes, segmental pediments, and slate-hung sides. There are six irregularly spaced bays with glazing bar sashes that have stone cills; most are 12-pane sashes except for the right-hand ground floor sash, which has 16 panes. A recessed porch in the third bay from the left, altered in the mid-20th century, has chamfered reveals and a four-panelled door with sidelights and a margin-light overlight. There is also an inserted doorway to the left with chamfered reveals and a four-panelled door with a margin-light overlight.

Inside, the building has been largely remodeled in the early 19th century. There is a segmental archway between the entrance hall and the staircase hall at the rear, featuring pilasters and a panelled soffit. The early 19th-century dog-leg staircase rises two floors and includes landings, a closed string, stick balusters, a swept handrail, and a columnar newel post. The interior fittings from the early 19th century include six-panelled doors with moulded architraves, cased beams, dado and picture rails, and internal panelled window shutters. Some reused 17th or early 18th-century panelling is present in a ground-floor cupboard. The left-hand rear room on the ground floor features complete Art Deco decoration from around 1930, including stencilled wallpaper and a fireplace.

The house originally had rustication on the ground floor, architraves around the ground-floor windows, an Ionic porch, and railed enclosures at the front. Most of these features, except for the architraves, likely date from the early 19th-century remodeling but were removed around 1920 when the footpath was widened.